"15 Step" was written in the rarely used 5/4 time signature. The most well-known example of a song written in a 5/4 meter is "Take Five
" by The Dave Brubeck Quartet. Another example of a Radiohead song written in an unusual time signature is "Morning Bell
" from Amnesiac
, which was written in 7/8. When performing, the band sometimes puts these songs together. In an interview with New York
magazine, Ed O'Brien explained why they did so at a June 2006 concert at Madison Square Garden: "Putting '15 Step' and 'Morning Bell' together was deliberate. '15 Step' is in 5/4 and 'Morning Bell' is in 7/8. It's nice to have a bit of clapping, a bit of audience participation, if they can get the beat. In Spain, they love 'Morning Bell' - all the fast clapping is like flamenco music. But in the West, we're not very rhythm-savvy. Anything not in 4/4 is hard for a lot of people."